SensoDetect BERA 3.1 differs from the current power supply model in that it can run on battery power making it mobile. SensoDetect have throughits collaboration with testing sites gathered information and improvements sugestions that make the measurements even easier, faster and more secure than before and therefore the company developed BERA 3.1 as an option to ourcurrect version BERA 3.0. SensoDetect offer will thus now include two models of BERA version 3. BERA 3.0 - which includes a universal power adapter for 110-240V/50/60hz; BERA 3.1 - which includes a standard battery pack 12V with operating time of about 1 day. Customers wishing to extend the operating time can be purchased extra battery as back-up or for operation throughout the day.